SYNTHESIS OF HYDRAULIC POWER CYLINDERS OF BUILDING CRANES

By Yan Semyonovich Vatulin

Abstract

The object of the investigation is the hydraulic cylinders of self-propelled jib cranes on a special truck-type chassis and automobile cranes with telescopic booms. The purpose is the synthesis of the hydraulic power cylinders of building cranes by formalization of variable parameters meeting the required reliability level at a lower mass on the basis of a universal design method. A mathemamical hydraulic cylinder model establishing the interrelation between the vector of the stress-strain state in the hydraulic cylinder sections and loading conditions reflecting the degree of the interaction of the components between each other, the hydraulic cylinder on the whole and the metal structure and supporting devices has been developed; the mechanisms forming loads on the bracing jack hydraulic cylinders in the crane index contour and the telescoping hydraulic cylinders have been determined with the deformability of the components of the metal structures and supporting devices considered. Methods for analysing and evaluating the stuctural parameters, including the weight and reliability ones, providing their optimum combination have been worked outAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio